REZENDE, M.V.S.PEREIRA, U.C.REZENDE, Y.R.R.S.CARVALHO, I.S.SILVEIRA, W.S.JUNOT, D.O.SILVA, R.S.RESENDE, C.X.FERREIRA, N.S.2021-07-232021-07-232021REZENDE, M.V.S.; PEREIRA, U.C.; REZENDE, Y.R.R.S.; CARVALHO, I.S.; SILVEIRA, W.S.; JUNOT, D.O.; SILVA, R.S.; RESENDE, C.X.; FERREIRA, N.S. Sustainable preparation of ixora flower-like shaped luminescent powder by recycling crab shell biowaste. <b>Optik - International Journal for Light and Electron Optics</b>, v. 235, p. 1-5, 2021. DOI: <a href="https://dx.doi.org/10.1016/j.ijleo.2021.166636">10.1016/j.ijleo.2021.166636</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/32050.0030-4026http://repositorio.ipen.br/handle/123456789/32050We report on cost-effective recycling of crab shell biowaste and synthesis of luminescent powders. XRD, thermogravimetric and, FTIR analysis revealed that calcination temperature must be beyond ∼800 °C to recycle biowastes crab (Ucides cordatus) shell into crystalline powder composed of CaO, and a small amount of CaCO3, NaCa(PO4), MgO, and Ca₁₀(PO₄)₆(OH)₂. SEM analysis revealed that calcination of crab shell biowaste at 800 °C/2 h produced the homogeneous cauliflower- and ixora flower-like shaped intrinsic luminescent powders. XEOL and thermoluminescence analyses suggest that F+-centers of the CaO structure are responsible for the efficient intrinsic scintillation of the crab shell powder. Therefore, our study shows a biomaterial promise derived from seafood wastes as natural dosimeter materials for industrial applications.1-5openAccessbiological wastesrecyclingseafoodcrabsluminescencepowdersArtigo de periódico23510.1016/j.ijleo.2021.16663658.9168.00